The length of glass tube in Fortin barometer . . . . . . . . and the inside diameter . . . . . . . .
A. 920 mm, 8 mm
B. 900 mm, 6 mm
C. 820 mm, 5 mm
D. 1000 mm, 10 mm
Answer: Option A
Related Questions on Mine Ventilation
The mechanical mixture of gases existing in a mine given off after explosion called
A. White damp
B. Stink damp
C. Black damp
D. After damp
A Drager Gas Mask does not filter
A. Water vapour
B. Nitrous fumes
C. Carbon monoxide
D. Carbon dioxide
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